[...] I've said it before but I'll say it again, asking to be able to transform a forum into a category in XenForo and vice versa is akin to saying that you've just posted a message on someone's profile and then wanting to be able to turn that message into a personal conversation instead, along with the option to turn it back into a profile post again. The data is fundamentally different, and simply cannot be switched back and forth as you desire. [...]